ADM9240–SPECIFICATIONS
1, 2
(T = T
A
MIN
to T
MAX
, V
CC
= V
MIN
to V
MAX
, unless otherwise noted)
Max
5.75
2.0
100
±
3
±
2
Units
V
mA
mA
µA
°C
°C
°C
Test Conditions/Comments
Parameter
POWER SUPPLY
Supply Voltage, V
CC
Supply Current, I
CC
Min
2.85
Typ
5
1.4
1.0
25
Interface Inactive, ADC Active
ADC Inactive, DAC Active
Shutdown Mode
–40°C
≤
T
A
≤
+125°C
T
A
= +25°C
TEMPERATURE-TO-DIGITAL CONVERTER
Accuracy
Resolution
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error, TUE
Differential Nonlinearity, DNL
Power Supply Sensitivity
Total Monitoring Cycle Time
Input Resistance
ANALOG OUTPUT
Output Voltage Range
Total Unadjusted Error, TUE
Full-Scale Error
Zero Error
Differential Nonlinearity, DNL
Integral Nonlinearity
Output Source Current
Output Sink Current
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
FAN1 and FAN2 Nominal Input RPM
100
0
±
1
2
±
1
2
1
±
0.5
±
1
311
311
140
±
2
±
1
331
353
200
1.25
±
3
±
3
±
1
%
LSB
%/V
µs
µs
kΩ
V
%
%
LSB
LSB
LSB
mA
mA
%
%
rpm
rpm
rpm
rpm
Note 3
+25°C
≤
T
A
≤
+125°C (Note 4)
–40°C
≤
T
A
≤
+125°C (Note 4)
I
L
= 2 mA
No Load
Monotonic by Design
±
6
±
12
255
8800
4400
2200
1100
+25°C
≤
T
A
≤
+125°C
–40
o
C
≤
T
A
≤
+125°C
Divisor = 1, Fan Count = 153
(Note 5)
Divisor = 2, Fan Count = 153
(Note 5)
Divisor = 3, Fan Count = 153
(Note 5)
Divisor = 4, Fan Count = 153
(Note 5)
+25°C
≤
T
A
≤
+125°C
–40
o
C
≤
T
A
≤
+125°C
I
OUT
= 5.0 mA,
V
CC
= 4.25 V–5.75 V
I
OUT
= 3.0 mA,
V
CC
= 2.85 V–3.45 V
I
OUT
= –5.0 mA,
V
CC
= 4.25 V–5.75 V
I
OUT
= –3.0 mA,
V
CC
= 2.85 V–3.45 V
Internal Clock Frequency
DIGITAL OUTPUT NTEST_OUT
Output High Voltage, V
OH
21.1
19.8
2.4
2.4
22.5
22.5
23.9
25.2
kHz
kHz
V
V
Output Low Voltage, V
OL
0.4
0.4
V
V
OPEN-DRAIN DIGITAL OUTPUTS
(INT,
RESET,
CI)
Output Low Voltage, V
OL
High Level Output Current, I
OH
RESET
and CI Pulsewidth
20
0.1
45
0.4
0.4
100
V
V
µA
ms
I
OUT
= –5.0 mA, V
CC
= 5.75 V
I
OUT
= –3.0 mA, V
CC
= 3.45 V
V
OUT
= V
CC
–2–
REV. 0
AD [ ANALOG DEVICES ]
